write a program to ask a user for a positive integer n and use nested for loops to print an n-level pyramid of asterisks. For example, if n = 4, the pyramid should look like:

∗

∗ ∗ ∗

∗∗ ∗ ∗∗

∗ ∗ ∗ ∗ ∗ ∗ ∗

The number of spaces before the asterisks on each line should be adjusted to create the pyramid shape. Hint: you can use one loop for managing the rows and another loop for managing the spaces and asterisks in each row. C++